Automatic pressure calibrator



FIG. 1 is a top, front, right side perspective view of an automatic pressure calibrator showing my new design.

FIG. 2 is a bottom, rear, left side perspective view thereof.

FIG. 3 is a front elevation view thereof.

FIG. 4 is a rear elevation view thereof.

FIG. 5 is a right side elevation view thereof.

FIG. 6 is a left side elevation view thereof.

FIG. 7 is a top plan view thereof.

FIG. 8 is a bottom plan view thereof.

FIG. 9 is a top, front, right side perspective view of another embodiment of an automatic pressure calibrator showing my new design.

FIG. 10 is a bottom, rear, left side perspective view thereof.

FIG. 11 is a front elevation view thereof.

FIG. 12 is a rear elevation view thereof.

FIG. 13 is a right side elevation view thereof.

FIG. 14 is a left side elevation view thereof.

FIG. 15 is a top plan view thereof; and,

FIG. 16 is a bottom plan view thereof.

The broken lines in the figures represent portions of the automatic pressure calibrator in which the design is embodied that form no part of the claimed design. 

CLAIM The ornamental design for an automatic pressure calibrator, as shown and described. 